The Body Comp has a weight range of 5-200 kg (9-440 lbs), with a 50 g (0.1 lbs) graduation.
Note: For the Body Comp only available in Japan, the weight range is 5-150 kg (9-330 lbs) with a 50 g (0.1 lbs) graduation.
https://support.withings.com/hc/en-us/sections/10155347479953-Body-Comp
https://support.withings.com/hc/en-us/sections/8666369830161-FAQ